Pipe-wrench.



C. E. ADAMS.

PIPE WRENCH.

" APPLIOATIOK IILED'DBO. a1, 1907.

Patented 0@t..27, 1908.

m RM WA N Es w \Lw T MA m a VAT SSE v r wrench, Fig. 2 is a bottom 3,-that is the face which is resents the greater amount UNITED STATES PATENT OFFICE.

CHARLES E. ADAMS, OF SORUBGRASS, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO BRYAN H. OSBORNE, OF

FRANKLIN, PENNSYLVANIA.

PIPE-WRENCH.

Specification of Letters Patent.

Patented Oct. 27, 1908.

Application filed December 31, 1907. Serial No. 408,796. a

E. ADAMS,

Be it known that I, CHARLES residing at citizen of the United States,

crubgrass, in the county of Venango and l State of Pennsylvania, have invented certain j To all whom it may concern: I I

new and useful Improvements in Pipe- Wrenches, of which the following is a specification, reference being had therein to the accompanying drawing. l

he construction of my improved pipe wrench is herein fully set forth, reference be- 1 ing had to the accompanyin drawings which 1 form a part hereof and in W ichz- Figure 1 is a side view view of the stock l or main portion of the wrench, Fig. 3 is a perspective view of the movable jaw, Fig. 4 is a detail.

The same reference letters indicate identical parts in the several views.

he stock or main portion of my wrench is a unitary structure, consisting of a handle 1, a body 2, and a downwardly-curved main or resistance jaw 3. The innerface of said aw jaw. The staformed inte ral with the stock is, therefore, a distinguis ing feathe term rel ace to the pi e.

Within the body 2 is formed a recess 2 for the reception of a j aw-actuating block 4, and a spiral spring 5 which bears against one end of said block. Upon the lower portion of the body 2, at each side of said recess, two cars 6, 6, are formed, and adapted to the attachment of one end of a swinging ressure jaw 7, the outer, or contact face of wl fich is in ap osition and conforms ap roximately to the workin face of jaw 3. aw 7 is provided at one enfwith a pivotal or hinge means of which it is attached to the ears by means of a in 9, said ears and said upper face of said j ping action of the movable mediately above the ivotal point thereof, is located a lug 8 whic is engaged by a notch 4 in the actuating block 4. piral spring 5 bears against one end of said block and presses in the direction indicated by the arrow in Fi 4. This action tends to keep the movab e jaw in close contact with the pipe and causes it to gri the same firml I have foun it desirable to limit the gripjaw, so that it will not crush the pipe at times when it is necessary to exert considerable force or power upon the wrench, and for this urpose, I pass a screw 10 through the movable jaw 7, at a oint in close proximity to the pivotal or inge point of the jaw; the inner end, or point of the screw bears against the approximate face of the body 2, and thus limits the iting or gripping action of jaw 7. It will be readily understood that this construction admits of an adjustment whereby the wrench may be made to conform to various sizes of pipe. Screw 10 further serves as a trigger or finger piece for operating or opening jaw 7.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is.

1. In a pipe-wrench, a unitary structure consisting of a resistance jaw, a body-portion and a handle, there being ears body-portion adapted to the mountin or attachment of a movable pressure jaw, t ere being also a recess formed in said body between said ears, a movable pressure jaw attached by one of its ends to said ears, the other end of said jaw being in juxtaposition to said first mentioned j aw, there being a lu upon said movable jaw approximate to the pivotal point thereof extending into said recess, an actuating block seated in said recess and adapted to engage said lug, a s ring 2. n a pipe-wrench, a unitary structure consisting of a main resistance jaw, a body portion and a handle, there being ears upon said body portion adapted to the mounting hment of a movable pressure jaw, there being also a recess formed in said bod between said ears, in combination with a movable pressure jaw attached by one of its ends to said ears, the other end of said jaw being in juxtaposition to said first mentioned jaw, there being a lug upon said mov- In testimony whereof I affix my signature able jaw, approximate to the pivotal point in presence of tWo Witnesses. thereof, extending into said recess an ac- CHARLES E. ADMIS' tuating block seated in said recess and adapt- .5 ed to engage said lug and a spring adapted Witnesses:

to bear upon one end of said block, for the MARY B. EOKERT, purpose set forth. EDWARD R. INMAN. 

